Hi there and welcome
First, do you have TomTom home installed on your computer?
Please let me know
Ok, can you download and install it from my link below please.
Once installed on your computer then you open it, connect the TomTom to the computer and you perform the updates within this program.
I can also do these steps for you, and have made a request via Additional Services. This is optional, and if you choose to do this, I can, with your permission, remote into your computer while you watch and do all these steps (and deal with any problems that arise during them) for you. Or if you do not choose to take this service, we can continue here. This is no problem at all. Just let me know please.
Else let me know the results please.